Doffer roll for carding machines



Sept. 26, 1950 E. L. cADY DoFFER RoLL FOR CARDING MACHINES 3 Sheets-Sheet 1 Filed June l5. 1948 ill@ i[lili l K HHM INVENTAOR EL. Cady ATTORNEY 1 MMI Sept. 26, 1950 E. 1 .v cADY 2,523,751

DOFFER ROLL FOR CARDING MACHINES Filed June 15, 1948 s sheets-sheet 2 28 Izq 3 2320 ,4 jig. 4

INVENTOR ATTORNEY E. L. LliunV l l DOFFER ROLL `vFOR CARDING MACHINES Sept. 261,1950

I5v Sheets-Sheet 3 Filed June 15, 1948 INVENTOR EL. Cady ATTORNEY A B 4 f /4 o Q w .f mrd, w l ,2 TL. U? 5 Q 7,40/ m Patented Sept. 26, 1950 YDOFFER ROLL FOR CARDING MACHINES Ernest L. Cady, West Hartford, Conn.; Amthor S. Welter, Staten Island, N. Y., executor of said Ernest L. Cady, deceased, assignor to The E. L. Cady Engineering Company, West Hartford, Conn., a corporation of Connecticut Application June 15, 1948, Serial No. 33,157

`6 claims.

This invention relates to doffer rolls for carding machines and more particularly to improved means for supporting radially movable interposed members disposed between the rows of card clothing needles.

A principal object of the invention is to provide an improved rotatable support for the card clothing rings on a doffer roll, and to adjustably support a structure on which are mounted a series of rings carrying interposedrmembers extending radially between the rows of card clothing needles so that the axis of this latter structure may be moved predetermined slight distances away from the axis of rotation of the support for the card clothing rings.

Another object is to provide eccentric bearings relatively adjustable for various amounts of ec-V centricity for supporting the opposite end members for the card clothing rings and also for supporting the rings for the interposed' members.

A feature of the invention that is important is that the rotating means providedvsfor one of the members through a radially movable connection affects rotation of the other member upon its axis for all adjustments of the distance between their axes.

Another feature of importance is that the doilerY roll with its complete card clothing and interposed members can be made to form a rigid but light weight structure supported in rigid bearings doifer roll for brous textile material such as wool or cotton and forming a part of a standard carding machine; but it will be understood that the invention can be embodied in other forms and for other textiles, and that the drawings are not to be construed as defining or limiting the scope of the invention, the claims appended to this specification being relied upon for that purpose.

In the drawings:

Figure 1 is a front elevation, partly in section, of an end portion of a complete doffer roll and the bearings therefor at one end madeV in accordance with the present invention;

Fig. 2 is a side elevation in section of the supporting rings for the card clothingand interposed members, the section being taken at an intermediate portion of the doffer roll;

' Figs. 3 and 4 are, respectively, sectional views taken on the planes of lines 3--3 and 4-4 in Fig. `2;

Fig. 5 is a plan view of the supporting bearings for the complete doier roll at one end thereof;

Fig. 6 is an end elevation of the bearings shown inFig. 5;

from its opposite ends, the rings von which the4 card clothing is supported being supported from end closures keyed to a shaft extending axially through the roll and held rigidly together by longitudinal rods, the rings supporting the interposed members being secured together and supported by end closure members mounted on short sleeve members rotated within rigid bearings through which the supporting shaft for the card clothing rings extends to its own supporting bearings.

And nally it is an object of the invention to provide an improved form of interposed member having connections at its ends with its supporting members that will permit slight angular adjustment of the individual interposed members enabling the members to accommodate themselves within the spaces between the closely adjacent rows of the card clothing needles.

With the above and other objects in View, the invention includes the features of construction and operation set forth in the following specification and illustrated in the accompanying drawings.

In the accompanying drawings annexed hereto and forming a part of this specification, I have shown the invention embodied in a complete Fig. 7 is a sectional view of the bearings taken on the plane of line 'l-l in Fig. 5, and

Fig. 8 is a detail view of one of the interposed members showing a modified form of connection with the supporting members to permit greater flexibility of adjustment of the member.

In the above-mentioned drawings there has been shown but one embodiment of the invention and a modified form of one of the details which are now deemed preferable, but it is to be understood that changes and modifications may be made within the scope of the appended claims Without departing from the spirit ofthe invention.

Briefly, and in its preferred aspect, the invention may include the following principal parts: First, a series of rings secured together and rotatably mounted, these rings having on their cir cumferential surfaces spaced card clothing strips provided with the usual rows of wire needles; second, a series of rings secured together and sup porting between them plate-like members disposed substantially radially between the rows of card clothing needles; third, a shaft extending from end to end' of the roll and supporting said rst mentioned rings; fourth, sleeves at opposite ends of said roll, these sleeves surrounding the shaft and supporting said second mentioned rings by means of suitable anti-friction bearings; and

justable distances from the carding machine cylinder (not shown).

Referring more in detail to the figures of the drawings, there is shown a roll Ill supported for rotation within suitable bearings I2 mounted on portions of the carding machine at opposite ends. The roll I6 comprises a series of rings I4 placed side by side and secured together for rotation concentrically with the axis of rotation of the roll. Surrounding these rings I4 are a series of rings I6, two for each ring I4. Rings I6 are secured together in side by side relation similarly to rings I4 and during rotation have an eccentric motion relative to rings I4.

The series of rings E4 are secured together by tie rods l extending throughout the length of the roll. Each of these rings I4 has Wrapped about its peripheral surface a band of card cloth- `ing 20 having wire needles 22 extending radially in turn are supported upon a central shaft 26 to which the members 24 may be secured in any desired manner (not shown). As shown in Fig.

v1 of the drawings, the central shaft 26 to which the end closing members 24 are secured is extended at one end for rotation by any driving Y means such as the pulley 2'I.

The second series of rings I6 surround the first series I4 and each ring i6 engages within portions of a ring I4, and one end of each ring I6 supports one end of one of the interposed members 28, opposite ends of these members 28 extending into annular recesses within and being supported by separate rings I6. For this purpose, the opposite faces of adjacent rings adjacent their periphery are provided with circumferential grooves into which the end extensions 36 of the interposed members 28 may freely extend. All of the rings I6 of this second series may be secured together by suitable tie rods 32 extended to and holding an end cover member 34 in position as shown at the lower portion of Fig. l. The end cover members 34 are rotatably mounted as on suitable anti-friction bearings 31 within non-rotating sleeves 36, one for each cover) I plate. Each sleeve 36 extends into a bearing at the opposite ends of the roll III and is large enough for the shaft 26 to extend therethrough and be permitted lateral movement therein.

By reference to Figs. 5, 6' and 7, it will be seen k that the sleeves 36 have worm teeth 38 cut into their peripheries extending within the bearings so that by rotation of a worm 40 on the lower end of a short vertical shaft 42 the anti-friction bearings for the closing members 34 may be adjusted. The axis of the sleeve 36 and that of the anti-friction bearing 3l are disposed eccentrically to each other and on parallel axes. By rotation of the worm 4i) and the sleeve 36 the axis of the anti-friction bearing and therefore the axis of the rings i6 for the interposed memthis member 46 teeth similar to teeth 38 on sleeve 36 are cut in its periphery which are in mesh with a worm 48 on a short vertical shaft 43 similar to shaft 42. To determine the positions of the sleeve 36 and the shaft 26, graduations 5U may be provided on knobs at the upper ends of these shafts for worms 4U and 48.

The effect of various adjustments of the sleeve 36 and shaft 26 is to vary the distance between the axes of these two members and to position these members toward and from the cylinder of the carding machine (not shown). As the two series of rings I4 and I6 rotate together, the radial movement of one series of rings relative to the other will be widely varied by varying the eccentricity of the two shafts. This eccentric movement radially moves the interposed members 28 relatively to the wire needles 22 of the card clothing 20. With the worms 40 and 48 so adjusted that the axes of the two series of rings i4 and I6 are in the same horizontal plane and rspaced parallelly, the interposed members 28 will be extended beyond the ends of the needles 22 at one side and retracted on the opposite side of the roll.

This movemnt of the members '28 relative to the needles 22 is similar to that made use of in applicants prior Patent No. 1,727,393, granted September 10, 1929, and is for the same purpose, namely, to facilitate removal of the fibres from the doifer cylinder of a carding machine. The cylinder is loaded with the bres on that side of the doffer toward the final cylinder of the carding machine and Where the interposed members 28 are retracted. On the opposite side of the doffer away from the cylinder where the interposed members are advanced beyond the needles 22 the bres lie loosely on the ends of these members and readily may be removed.

In Fig. 7 is shown locking means for the eccentric rotatable member 46 and it will be understood that similar locking means for the sleeve 36 shown in Figs. 1 and 5 also may be provided. Bushings 54 are fitted within a vertical hole within the mounting for the bearing, and may be drawn together by any suitable threaded means. In Fig. 8 is shown in detail a preferred form of interposed member 28, this, as shown, being in the form of a short strip of metal such as aluminum. At opposite ends projections 58 are formed which enter the annular groove in the retaining ring I6. To facilitate adjustment of these members 28 the projections may be barrel shape in cross section, as shown. As these members 28 lie at a helix angle of about 30 to the axis of the roll I0, they are slightly curved along their outer edge to compensate for this helix angle. The end rings I4 and the width of card clothing on these end rings are substantially wider than those forming the strands to be carded. To facilitate the removal of fibres at the opposite ends of the roll where the layer of fibres may not be uniform, interposed members 29 are provided similar to members 28 but materially longer. These are shown in Fig. l.

Fig. 1 shows in section a form of axial adjustment for the support for the bearings for the shaft 26 and attached parts to relatively position the doffer roll to a carding machine. The bearing box or support I2 is shown supported in a fixed base 60 secured to the carding machine frame and may be slidably mounted within the base. Lateral movements of the shaft 26 and the sleeve 36 by means of which movements of the rings I4 and I6 toward and from the carding machine are controlled are affected by adjustments of the eccentrics referred to above. 1t is necessary, however, to provide an axial adjustment of the bearings relative to the xed base 60 so that the axial position of the rings lll and I6 of the roll lli will be in proper position relative to the carding machine roll against which roll lll is placed.

For this purpose-the bearing box I2 on opposite faces is provided withV studs E2 on the outer ends of which are mounted rectangular plates 64 having serrations 6E along their upper edges. Engaging these serrations 65 are corresponding serrations formed in the cover plates 68 for the base B0.

It will be seen from the above that by releasing the cover plate S8 the plate B4 and stud 62 may be moved axially of the shaft 26. This movement will also move the supporting bearing l2 within its xed base 60 (see Fig. 1). With the box l2 positioned as desired the cover plate 68 may again be tightened with its serrations engaging the serrations on plate 64 in a new position.

The graduations 50 to determine the position of the eccentrics by indicating the rotative position of the worms 40 and 48 may be so arranged that similar lines such as on each will be aligned with zero lines when the eccentrics are on their top central position. Also means (not shown) may be provided to allow movement of the eccentrics in but one direction. By adjustment of the eccentric bearing for the shaft 26 the position of the rings i4 and needles 22 toward and from the cylinder of the carding machine may be varied for the particular type of fibres being carded. By adjustment of the eccentric for the rings I6 for the interposed members 28 the radial movement of these members 28 relative to the needles 22 may be increased or decreased.

By means of the pulley 21 on the end of shaft 26 the end plates 24 and the rings I4 for the needles 22 are rotated as a single unit rigidly held together. To effect simultaneous rotation of the rings i6 on which are mounted the interposed members 22 one of the end plates 34 for these rings I6 is interconnected to one of the end plates 24. This connection is shown in Fig. l. On the outer-face of plate 24 lis a short projection carrying a roller 69. This roller G9 engages within a radial slot 'lll formed in the end plates 34. The roller 89 therefore is-free to move radially within this slot l0 during the rotation of rings I4 and i6 upon eccentric axes and with rotation of the plate 24 will rotate the plate 34 and the rings I6 vrigidly connected thereto.

I claim:

1. A doffer roll comprising in combination, a plurality of rings having card clothing thereon, a plurality of rings mounting members interposed between the rows of needles of said card clothingsupporting means for said two groups of rings upon parallel axes, bearings for each group of rings at opposite ends of said roll, said bearings having adjustments for varying the amount of separation of said axes, and means to simultaneously rotate said rings.

2. A doffer roll comprising in combination, a plurality of aligned rings having card clothing thereon, a plurality of rings mounting members interposed between the rows of needles of said card clothing for radial movement therebetween, supporting means for said two groups of rings for rotation upon parallel axes, bearings at opposite ends of said roll for each group of rings, said bearings being relatively adjustable to vary the amount of separation of said axes, and means to simultaneously rotate said rings.

3. A doffer roll comprising in combination, a plurality of rings secured together in alignment with each other and having card clothing thereon, a plurality of rings secured together and mounting members interposed between the rows of needles of said card clothing for radial movement therebetween, supporting means for rotating said groups of rings upon parallelaxes, eccentric annular bearings for each grou-p of rings at opposite ends of said roll, said bearings having adjustments for the amount of separation of said y rounding the opposite ends of said shaft, said sleeves supporting said second group of rings on an axis parallel to the axis of said first rings, and means for adjusting the amount of separation of the axesv of said shaft and sleeves, whereby said interposed members will move radially between the needles of said card clothing, and means to simultaneously rotate said shaft and sleeves on parallel axes.

5. A doffer roll comprising in combination, a

plurality of rings secured together in alignment and Vhaving card clothing thereon, a plurality of rings secured together in alignment and having members interposed between the rows of needles of said card clothing for radial movement therebetween, a shaft supporting one group of rings, sleeves surrounding the ends of said shaft on which said second group of rings is supported, relatively rotatable eccentric means for adjusting the separation of the axes of said shaft and sleeve, means to rotate said shaft upon its axes, and means connected to said first rings to simultaneously rotate said second rings therefrom.

6. A doffer roll comprising in combination, a plurality of rings secured together upon a common axis and having card clothing thereon, a plurality of rings secured together upon another common axis and mounting members interposed Ibetween the rows of needles of said card clothing, a shaft supporting the group of rings having card clothing thereon, sleeves surrounding the ends of said shaft, said sleevesV supporting the group of rings on an axis parallel to said shaft and having interposed members thereon, relatively r0- tatable eccentric members for adjusting the separation of the axes of said shaft and sleeve and for adjusting said axes toward and from a carding machine cylinder, and means to simultaneously rotate said shaft and sleeves upon their axes.

. ERNEST L. CADY.

REFERENCES CITED The following references are of record in the file `*of this patent:

UNITED, STATES PATENTS 

